A more nuanced article (perhaps) from Australia's ABC:
COVID-19 cases confirmed aboard first cruise liner to dock in Western Australia after two years - ABC News
The confusing part is Princess and State authorities pointing at each other in terms of whose protocols they are following, to wit (WA being Western Australia):
"WA Health has been advised of passengers and crew testing positive to COVID-19, and this evolving situation is being managed by the vessel operator according to its COVID-19 plan"
(emphasis added), versus:
"A spokesperson for the company operating the vessel, Princess Cruises, said a rise in COVID-19 cases aboard was being "managed effectively" in accordance with national and state protocols."
Perhaps there will be more excitement in the media when it arrives in Fremantle ... being Princess, and being WA, it's almost a sure bet.